Door fitting for glass sliding suspension doors



July 29, 1969 F. zlEGLER 3,457,677

DOOR FITTING FOR GLASS SLIDING SUSPENSION DOORS Filed Oct. 9, 1967 FrfZnZ ZL'fZe/ BY /f l r f7 mi, aff@ www M2M.

United States Patent 3,457,677 DOOR FITTING FOR GLASS SLIDING SUSPENSION DOORS Franz Ziegler, Frohbergstrasse 7, Winterthur, Switzerland Filed Oct. 9, 1967, Ser. No. 673,590 Int. Cl. Ed 13/02 U.S. Cl. 49-409 5 Claims ABSTRACT OF THE DISCLOSURE The invention relates to a suspension fitting for sliding doors, particularly glass sliding doors and having a head part slidable and set in a track rail and a foot part secured to the door between two extending lug or shank portions.

Fittings are known for glass sliding doors which are provided with suspension devices having rollers and such fittings of this type are in the yform of ball slides or rollers secured to U -shaped metal track members as glass carriers. A drawback to such fittings resides in the fact that the glass is secured in the track by a cement or by means of screws or bolts. A further drawback is present in the use of material and the work necessary for installation as well as the required space which must be provided for such fittings.

It is therefore an object of the invention to provide a suspension fitting which does not require screws or like members and which can be easily applied and removed without any difficulty and which involve simple and space saving structure as well as inexpensive application. This is achieved by the present invention in that the shank portions of the foot parts are elastic and in their lower part on an inner side being provided with a projecting portion extending into a depression in the glass door. Such a clamp holder will safely suspend the door whereby also it is preferable that one andthe same fitting can be applied so different sizes of doors can be used. The suspension fittings according to the invention can be easily applied on the door since it is mounted similar to a rider on the upper edge of the door. In View of the elastic property of the fitting, the projecting parts will automatically spring into the depressions in the door. T o remove the fittings it is merely necessary to pry or spread the Shanks apart.

Since the depressions for the projections can be easily produced, the projecting members can be in the form of discs and can comprise a diameter approximating the diameter of the bore of the depression.

The fitting is particularly easily removable when the one shank in the region of the thickened portion has a bore therein, so that with the aid of a plug member with preferably a conical shaft, the shank portions may be spread apart so that the door may be removed.

ln a modified structure the track rail may comprise a double structure and also each track rail section may have two carrying shoulders for the head part of the shank. The shank has a head part and a `foot part with an intermediate part interconnecting the two and the head part has two guide grooves. This latter will provide a sure guide suspension means for the glass door and the structure will prevent the lateral swaying of the door. The carrying shanks will have an easier running or sliding movement for the door when two wave-like surfaces are provided.

Another object of the invention resides in the provision 3,457,677 Patented July 29, 1969 of making the suspension fittings of one integral piece and also of a plastic or synthetic material to reduce noise and also reducing sliding friction to a minimum. Further objects'will be apparent from the following description when considered in connection with the accompanying drawing in which;

FIGURE l is a sectional view of a double track and suspension fittings on the upper parts of the doors, and

FIG. 2 is a cross section of the fitting of FIG. 1 taken on line II-II of FIG. 1 in the direction of the arrows.

The head part 11 of the suspension fitting for a glass door 1 slides with two projecting shoulders 4 which are running surfaces on the underside of the slide devices in the shape of two wave-like projections to run on the track surfaces of a hollow-profiled slide track 12 in a front frame 13. An intermediate part 5 which projects through the longitudinal slot of the track connects the head part 11 with a widened foot part 2 and forms together therewith and the carrying shoulders 4, two guide grooves, in which one ridge formed projecting portion 6 of the slide track grips. The two projecting portions will form the running track for the fitting.

The foot part as shown in FIG. 2. at the side of the mounting, two elastic Shanks 8 and 8 as approximate trapeze Vformed with rounded-ofi flat halves, between which a clearance is provided of such strength corresponding to the glass door. Each shank 8 and 8 is provided on its free end on the inside thereof with a disc-like projecting part 7 and 7 The height of the parts 7 and 7 is so chosen that they will project sufficiently into the bore in the door 1.

The entire suspension fitting is preferably made in one unitary piece and preferably of polyamide.

The shank 8 and its disc-like projection 7 are bored through at 10 and in this 4bore a conical plug 9 may be inserted to such an extent that it will contact or abut against the disc-like projection 7 of the opposite shank 8 by its end to thus force or pry the shanks 8 and 8' apart. When the plug 9 is shoved a sufiicient distance, it will be clamped in thebore 10. Then it is possible to pull the glass door downwardly a short distance and after removing the plug 9 entirely out of the suspension tting the glass door may be pulled entirely out of the hanger.

The suspended door will be supported at the bottom by the usual means and guides not shown.

I claim:

1. Suspension fittings for sliding doors, especially glass sliding doors, comprising a head element insertable into a running rail on two symmetrical studs overlapping the edge of the door, the studs being adapted to be pressed elastically with spring tension in opposed directions and projections provided in the area of the ends of the studs on their inside surfaces which snap into recesses in the surface of the doors and which are held against sliding out by the spring force of the studs.

2. Suspension fittings according to claim 1, in which the projections are circular disks each with a diameter equal to the diameter of the recesses in the door and developed as bores.

3. Suspension fittings according to claim 1, in which the stud has a piercing bore within the area of the projection, and in which a guide pin is provided which can be introduced into the bore and has a conical shaft.

4. Suspension fittings according to claim 1, in which the fitting is made in one piece of a plastic material as polyamide.

5. Suspension fittings according to claim 1, in which the head element has surfaces as bearing shoulders which are wave-shaped in the gliding direction and in which the upper ends of the studs run parallel to the bearing shoulders and together with the sliding surfaces of the 3 4 bearing shoulders have lateral limit grooves for vrunning FOREIGN PATENTS strips of the gliding rail which are elongated at the head 478,108 6/1929 Ger-many part.

DAVID I. WILLIAMOWSKY, Primary Examiner References Cited 5 UNITED STATES PATENTS J. KARL BELL, Assistant Examlner 2,126,111 8/1938l Holderle et al S12-138 U.S. C1. X.R. 2,320,308 5'/ 1943 Silverman 16-87.2

16-872, 93 3,248,749 5/ 1966 Williams 1687.2 

